Accurate fatality rates for agricultural workers from heat stress can be difficult to obtain due to the varied nature of these duties and the fact that some of the deaths on small farms may not be considered work-related. A review of publications would indicate that the fatality rate in agriculture is near 4 deaths per one million workers per year, or about 20 times higher than the .2 rate for other US workers overall. The most common cause of fatalities due to heat stress is not taking an adequate number of days to get fully acclimated to a hot working environment. See: Heat Illness and Death Among Workers (CDC): https://www.cdc.gov/mmwr/preview/mmwrhtml/mm6331a1.htm
